Natural radiation originates from which two sources?

Natural radiation originates from which two sources?

• A. Man-made and cosmic
• B. Cosmic and terrestrial
• C. Alpha and beta
• D. Fission and fusion

Answer: (B)

Natural radiation predominantly originates from two primary sources: cosmic radiation, which comes from outer space and includes high-energy particles from the sun and other celestial bodies, and terrestrial radiation, which comes from radioactive materials that are naturally found in the earth's crust, such as uranium, thorium, and radon. This dual-source framework is essential for understanding the different types of natural radiation exposure that individuals encounter in daily life. Cosmic radiation is ubiquitous and affects everyone on the planet, with higher exposure levels at greater altitudes and during air travel. Terrestrial radiation varies based on geographical location, as certain areas have more naturally occurring radioactive materials than others. Together, these sources contribute to the background radiation level that is a standard aspect of our environment.

Natural radiation predominantly originates from two primary sources: cosmic radiation, which comes from outer space and includes high-energy particles from the sun and other celestial bodies, and terrestrial radiation, which comes from radioactive materials that are naturally found in the earth's crust, such as uranium, thorium, and radon. This dual-source framework is essential for understanding the different types of natural radiation exposure that individuals encounter in daily life.

Cosmic radiation is ubiquitous and affects everyone on the planet, with higher exposure levels at greater altitudes and during air travel. Terrestrial radiation varies based on geographical location, as certain areas have more naturally occurring radioactive materials than others. Together, these sources contribute to the background radiation level that is a standard aspect of our environment.